MethodImplAttribute Třída

Definice

public ref class MethodImplAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Constructor | System.AttributeTargets.Method, Inherited=false)]
public sealed class MethodImplAttribute : Attribute

[System.AttributeUsage(System.AttributeTargets.Constructor | System.AttributeTargets.Method, Inherited=false)]
[System.Serializable]
public sealed class MethodImplAttribute : Attribute

[System.AttributeUsage(System.AttributeTargets.Constructor | System.AttributeTargets.Method, Inherited=false)]
[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class MethodImplAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Constructor | System.AttributeTargets.Method, Inherited=false)>]
type MethodImplAttribute = class
    inherit Attribute

[<System.AttributeUsage(System.AttributeTargets.Constructor | System.AttributeTargets.Method, Inherited=false)>]
[<System.Serializable>]
type MethodImplAttribute = class
    inherit Attribute

[<System.AttributeUsage(System.AttributeTargets.Constructor | System.AttributeTargets.Method, Inherited=false)>]
[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type MethodImplAttribute = class
    inherit Attribute

Public NotInheritable Class MethodImplAttribute
Inherits Attribute

Dědičnost

Object

Attribute

MethodImplAttribute

Atributy

AttributeUsageAttribute SerializableAttribute ComVisibleAttribute

Příklady

Následující příklad aplikuje MethodImplAttribute na metodu GetCalendarName , aby se zajistilo, že není vložen za běhu kompilátorem JIT (just-in-time).

using System;
using System.Globalization;
using System.Runtime.CompilerServices;

public class Utility
{
   [MethodImplAttribute(MethodImplOptions.NoInlining)] 
   public static string GetCalendarName(Calendar cal)
   {
      return cal.ToString().Replace("System.Globalization.", "").
                 Replace("Calendar", "");
   }
}

Imports System.Globalization
Imports System.Runtime.CompilerServices

Public Class Utility
   <MethodImplAttribute(MethodImplOptions.NoInlining)>
   Public Shared Function GetCalendarName(cal As Calendar) As String
      Return cal.ToString().Replace("System.Globalization.", "").Replace("Calendar", "")
   End Function
End Class

Následující příklad pak zavolá metodu MethodInfo.GetMethodImplementationFlags k určení, které příznaky jsou nastaveny pro metodu GetCalendarName . Také ukazuje, že tyto informace nejsou načteny metodou MemberInfo.GetCustomAttributes .

using System;
using System.Reflection;

public class Example
{
   public static void Main()
   {
      // Use reflection to get a reference to the GetCalendarName method.
      Assembly assem = Assembly.LoadFrom(@".\Example.dll");
      Type type = assem.GetType("Utility");
      MethodInfo methodInfo = type.GetMethod("GetCalendarName");
      
      // Determine whether the method has any custom attributes.
      Console.Write("Utility.GetCalendarName custom attributes:");
      object[] attribs = methodInfo.GetCustomAttributes(false);
      if (attribs.Length > 0) {
         Console.WriteLine();
         foreach (var attrib in attribs)
            Console.WriteLine("   " + attrib.ToString());   
      }
      else {
         Console.WriteLine("   <None>");
      }

      // Get the method's metadata flags.
      MethodImplAttributes flags = methodInfo.GetMethodImplementationFlags();
      Console.WriteLine("Utility.GetCalendarName flags: {0}", 
                        flags.ToString());      
   }
}
// The example displays the following output:
//     Utility.GetCalendarName custom attributes:   <None>
//     Utility.GetCalendarName flags: NoInlining

Imports System.Reflection

Module Example
   Public Sub Main()
      ' Use reflection to get a reference to the GetCalendarName method.
      Dim assem As Assembly = Assembly.LoadFrom(".\Example.dll")
      Dim type As Type = assem.GetType("Utility")
      Dim methodInfo As MethodInfo = type.GetMethod("GetCalendarName")
      
      ' Determine whether the method has any custom attributes.
      Console.Write("Utility.GetCalendarName custom attributes:")
      Dim attribs() As Object = methodInfo.GetCustomAttributes(False)
      If attribs.Length > 0 Then
         Console.WriteLine()
         For Each attrib As Object In attribs
            Console.WriteLine("   " + attrib.ToString())   
         Next
      Else
         Console.WriteLine("   <None>")
      End If

      ' Get the method's metadata flags.
      Dim flags As MethodImplAttributes = methodInfo.GetMethodImplementationFlags()
      Console.WriteLine("Utility.GetCalendarName flags: {0}", flags.ToString())      
   End Sub
End Module
' The example displays the following output:
'     Utility.GetCalendarName custom attributes:   <None>
'     Utility.GetCalendarName flags: NoInlining

Poznámky

Tento atribut můžete použít na metody nebo konstruktory.

Tento atribut umožňuje přizpůsobit konfiguraci metody nebo konstruktoru, na který se vztahuje, zadáním MethodImplOptions hodnoty do konstruktoru třídy. Členy výčtu MethodImplOptions odpovídají bitová pole v tabulce CorMethodImpl metadat. To znamená, že informace o atributu nelze načíst za běhu voláním MemberInfo.GetCustomAttributes metody; místo toho se načte voláním metody nebo MethodInfo.GetMethodImplementationFlagsConstructorInfo.GetMethodImplementationFlags .

Konstruktory

Pole

Vlastnosti

Metody

Explicitní implementace rozhraní

Platí pro

Viz také

• GetMethodImplementationFlags()